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Fast Mode Decision for Spatial Transcoding of H.264/AVC Contents  

Kwon Sang-Gu (Sungkyunkwan University, School of Information and Communication Engineering)
Jung Bong-Soo (Sungkyunkwan University, School of Information and Communication Engineering)
Jeon Byeung-Woo (Sungkyunkwan University, School of Information and Communication Engineering)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.43, no.3, 2006 , pp. 43-53 More about this Journal
Abstract
As wireless network technology has advanced, demands for multimedia contents through mobile environment have tendered to upward. Since network situation is changing every moment and types of user terminals are diverse, it is difficult for a content provider to consider network situation and type of user terminal to provide multimedia contents. As one solution, transcoding techniques have been proposed, but those have much complexity. In this paper, in order to reduce computational complexity, we propose a fast mode decision using input modes, motion vectors, and residual energies which are obtained from input bitstream for 2:1 down-scaling spatial transcoding application. The proposed method reduces processing time in mode decision by restricting possible mode types based on input information. Experimental results show that the proposed method achieves about 2.66 times improvement in encoding time compared to the normal encoding process while the PSNR is degraded by about 0.04dB, and bit-rate is increased by 1.6%.
Keywords
Mode Decision; H.264/AVC;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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